Describe Mobile Apps and QR Code Readers

question 45

Essay

Describe mobile apps and QR code readers.

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Definitions:

Virtual Memory

A memory management technique that gives an application the impression it has contiguous working memory, while actually using fragments of physical memory and disk space.

Physical RAM

The actual hardware component, typically in the form of modules, that provides the physical memory space for a computer to store data temporarily.

Page File

A single block of memory space, 4 KB in size, used to store files that may also retrieve a file located on a disk.

Virtual Memory

A memory management capability of an operating system that uses hardware and software to allow a computer to compensate for physical memory shortages, temporarily transferring data from random access memory (RAM) to disk storage.